Define a commodity hardware? Does commodity hardware include ram?
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How many instances of a jobtracker run on hadoop cluster?
Where do you specify the Mapper Implementation?
What are the steps to submit a Hadoop job?
How Mapper is instantiated in a running job?
How blocks are distributed among all data nodes for a particular chunk of data?
What exactly is hadoop?
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
What is a 'block' in HDFS?
What is IdentityMapper?
Which data storage components are used by hadoop?
What is your favourite tool in the hadoop ecosystem?
Explain the overview of hadoop history breifly?